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Knee performance and self-efficacy trajectory curves after ACL reconstruction: A longitudinal study
Journal article   Peer reviewed

Knee performance and self-efficacy trajectory curves after ACL reconstruction: A longitudinal study

Yong-Hao Pua, Juanita Low, Ee-Lin Woon, Olivia Shi-Min Tay, Philip Cheong, Julian Thumboo, Ross Allan Clark, Paul Chang, Andrew Tan and Jia-Ying Ho
Physical Therapy in Sport, Vol.49, pp.157-163
2021
DOI: https://doi.org/10.1016/j.ptsp.2021.02.008
PMID: 33721625
url
https://doi.org/10.1016/j.ptsp.2021.02.008View
Published Version

Abstract

Quadriceps knee ACL Psychosocial factors
To examine knee flexion range-of-motion, quadriceps strength, and knee self-efficacy trajectory curves over 6 months after anterior cruciate ligament reconstruction (ACLR), stratified by patients' Month-6 sports activity level. Prospective longitudinal study. Hospital outpatient physiotherapy department. 595 individuals after unilateral ACLR (mean age, 27 years). At 2-, 3-, and 6-months post-surgery, knee flexion range-of-motion, quadriceps strength, and self-efficacy were quantified. Flexion range-of-motion was additionally measured at 2- and 4-weeks post-surgery. Sports activity levels were assessed using the Tegner Activity Score at 6-months post ACLR. The various measures improved nonlinearly over time, with substantial improvements observed in the first 2-4 months post-surgery. In multivariable generalized least squares models, greater knee flexion range-of-motion, quadriceps strength, and self-efficacy over time were significantly associated with higher Month-6 Tegner levels (all P values < 0.01). Additionally, receiving a bone-patellar-tendon-bone graft or meniscal repair was associated with lower quadriceps strength trajectories (P-values<0.001) while female sex was associated with lower knee self-efficacy trajectories (P = 0.02). Greater knee flexion range-of-motion, quadriceps strength, and self-efficacy were associated with higher Month-6 Tegner levels. The derived trajectory curves may be useful for effective management decision making and adequate results interpretation during the rehabilitation process.

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